// slideOutMenu

slideOutMenu.Registry = []

slideOutMenu.aniLen = 250

slideOutMenu.hideDelay = 1000

slideOutMenu.minCPUResolution = 10



// constructor

function slideOutMenu(id, dir, left, top, width, height)

{

	this.ie  = document.all ? 1 : 0

	this.ns4 = document.layers ? 1 : 0

	this.dom = document.getElementById ? 1 : 0

	this.css = "";



	if (this.ie || this.ns4 || this.dom) {

		this.id			 = id

		this.dir		 = dir

		this.orientation = dir == "left" || dir == "right" ? "h" : "v"

		this.dirType	 = dir == "right" || dir == "down" ? "-" : "+"

		this.dim		 = this.orientation == "h" ? width : height

		this.hideTimer	 = false

		this.aniTimer	 = false

		this.open		 = false

		this.over		 = false

		this.startTime	 = 0



		// global reference to this object

		this.gRef = "slideOutMenu_"+id

		eval(this.gRef+"=this")



		// add this menu object to an internal list of all menus

		slideOutMenu.Registry[id] = this



		var d = document



		var strCSS = "";

		strCSS += '* #subnav_' + this.id + ' { visibility:hidden; '

		strCSS += 'left:' + left + 'px; '

		strCSS += 'top:' + top + 'px; '

		strCSS += 'overflow:hidden; z-index:10000; }'

		strCSS += '* #subnav_' + this.id + ', * #list_' + this.id + ' { position:absolute; '

		strCSS += 'width:' + width + 'px; '

		strCSS += 'height:' + height + 'px; '

		strCSS += 'clip:rect(0 ' + width + ' ' + height + ' 0); '

		strCSS += '}'



		this.css = strCSS;



		this.load()

	}

}



slideOutMenu.writeCSS = function() {

	document.writeln('<style type="text/css">');



	for (var id in slideOutMenu.Registry) {

		document.writeln(slideOutMenu.Registry[id].css);

	}



	document.writeln('</style>');

}



slideOutMenu.prototype.load = function() {

	var d = document

	var lyrId1 = "subnav_" + this.id

	var lyrId2 = "list_" + this.id

	var obj1 = this.dom ? d.getElementById(lyrId1) : this.ie ? d.all[lyrId1] : d.layers[lyrId1]

	if (obj1) var obj2 = this.ns4 ? obj1.layers[lyrId2] : this.ie ? d.all[lyrId2] : d.getElementById(lyrId2)

	var temp



	if (!obj1 || !obj2) window.setTimeout(this.gRef + ".load()", 100)

	else {

		this.container	= obj1

		this.menu		= obj2

		this.style		= this.ns4 ? this.menu : this.menu.style

		this.homePos	= eval("0" + this.dirType + this.dim)

		this.outPos		= 0

		this.accelConst	= (this.outPos - this.homePos) / slideOutMenu.aniLen / slideOutMenu.aniLen 



		// set event handlers.

		if (this.ns4) this.menu.captureEvents(Event.MOUSEOVER | Event.MOUSEOUT);

		this.menu.onmouseover = new Function("slideOutMenu.showMenu('" + this.id + "')")

		this.menu.onmouseout = new Function("slideOutMenu.hideMenu('" + this.id + "')")



		//set initial state

		this.endSlide()

	}

}

	

slideOutMenu.showMenu = function(id)

{

	var reg = slideOutMenu.Registry

	var obj = slideOutMenu.Registry[id]

	

	if (obj.container) {

		obj.over = true



		// close other menus.

		for (menu in reg) if (id != menu) slideOutMenu.hide(menu)



		// if this menu is scheduled to close, cancel it.

		if (obj.hideTimer) { reg[id].hideTimer = window.clearTimeout(reg[id].hideTimer) }



		// if this menu is closed, open it.

		if (!obj.open && !obj.aniTimer) reg[id].startSlide(true)

	}

}



slideOutMenu.hideMenu = function(id)

{

	// schedules the menu to close after <hideDelay> ms, which

	// gives the user time to cancel the action if they accidentally moused out

	var obj = slideOutMenu.Registry[id]

	if (obj.container) {

		if (obj.hideTimer) window.clearTimeout(obj.hideTimer)

		obj.hideTimer = window.setTimeout("slideOutMenu.hide('" + id + "')", slideOutMenu.hideDelay);

	}

}



slideOutMenu.hideAll = function()

{

	var reg = slideOutMenu.Registry

	for (menu in reg) {

		slideOutMenu.hide(menu);

		if (menu.hideTimer) window.clearTimeout(menu.hideTimer);

	}

}



slideOutMenu.hide = function(id)

{

	var obj = slideOutMenu.Registry[id]

	obj.over = false



	if (obj.hideTimer) window.clearTimeout(obj.hideTimer)

	

	// flag that this scheduled event has occured.

	obj.hideTimer = 0



	// if this menu is open, close it.

	if (obj.open && !obj.aniTimer) obj.startSlide(false)

}



slideOutMenu.prototype.startSlide = function(open) {

	this[open ? "onactivate" : "ondeactivate"]()

	this.open = open

	if (open) this.setVisibility(true)

	this.startTime = (new Date()).getTime()	

	this.aniTimer = window.setInterval(this.gRef + ".slide()", slideOutMenu.minCPUResolution)

}



slideOutMenu.prototype.slide = function() {

	var elapsed = (new Date()).getTime() - this.startTime

	if (elapsed > slideOutMenu.aniLen) this.endSlide()

	else {

		var d = Math.round(Math.pow(slideOutMenu.aniLen-elapsed, 2) * this.accelConst)

		if (this.open && this.dirType == "-")		d = -d

		else if (this.open && this.dirType == "+")	d = -d

		else if (!this.open && this.dirType == "-")	d = -this.dim + d

		else										d = this.dim + d



		this.moveTo(d)

	}

}



slideOutMenu.prototype.endSlide = function() {

	this.aniTimer = window.clearTimeout(this.aniTimer)

	this.moveTo(this.open ? this.outPos : this.homePos)

	if (!this.open) this.setVisibility(false)

	if ((this.open && !this.over) || (!this.open && this.over)) {

		this.startSlide(this.over)

	}

}



slideOutMenu.prototype.setVisibility = function(bShow) { 

	var s = this.ns4 ? this.container : this.container.style

	s.visibility = bShow ? "visible" : "hidden"

}

slideOutMenu.prototype.moveTo = function(p) { 

	this.style[this.orientation == "h" ? "left" : "top"] = this.ns4 ? p : p + "px"

}

slideOutMenu.prototype.getPos = function(c) {

	return parseInt(this.style[c])

}



// events

slideOutMenu.prototype.onactivate		= function() { }

slideOutMenu.prototype.ondeactivate	= function() { }



// "id", "slide direction", x from left, y from top, width, height

var menus = [

new slideOutMenu("patient_login", "up", 0, -94, 171, 34),

new slideOutMenu("our_team", "up", 171, -94, 122, 34),

new slideOutMenu("our_services", "up", 294, -158, 145, 98),

new slideOutMenu("all_about_braces", "up", 440, -241, 179, 182),

new slideOutMenu("contact_us", "up", 620, -94, 140, 34),

new slideOutMenu("our_office", "up", 0, -64, 132, 34)

]

slideOutMenu.writeCSS();